[sdiy] Hewlett oscillator

[Oren Leavitt]

A #1829 28V bulb in series with a 220 ohm feedback resistor works good 
for an op-amp based Wein Bridge oscillator.
You can use any low current (say 50ma), low voltage bulb. You'll just to 
  tweek the feedback resistor for desired amplitude.
You'll have nice, slightly microphonic oscillator :-)
- Oren


Dan Snazelle wrote:
> anybody got a part number for the kind of BULB you are supposed to use with these? i have always been scared of oscillators that use Bulbs or neon bulbs as i never knew if you could just use any old light bulb or not.
> 
> thanks!
> 
> 
> o/synth-diy
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